Buscar
Mostrando ítems 21-30 de 282
The impact of hypothermic pulsatile machine perfusion versus static cold storage: A donor-matched paired analysis in a scenario of high incidence of delayed kidney graft function
(2020-01-01)
Background: Material/Methods: Results: Conclusions: The present study analyzed the impact of hypothermic pulsatile machine perfusion (MP) following a long period of static cold (SC) storage in the peculiar Brazilian scenario ...
Vortex dynamics under pulsatile flow in axisymmetric constricted tubes
(Universidad Nacional de La Plata, 2020)
Improved understanding of how vortices develop and propagate under pulsatile flow can shed important light on the mixing and transport processes occurring in such systems, including the transition to turbulent regime. For ...
Mock circulatory system for the evaluation of left ventricular assist devices, endoluminal prostheses, and vascular diseases
(WILEY-BLACKWELL, 2008)
A new digital computer mock circulatory system has been developed in order to replicate the physiologic and pathophysiologic characteristics of the human cardiovascular system. The computer performs the acquisition of ...
A preliminary simulation for the development of an implantable pulsatile blood pump
(Techno-press, 2014-06)
A preliminary study of a new pulsatile pump, that will work to a frequency greater than 1 Hz, is presented. The fluid-structure interaction between a Newtonian blood flow and a piston drive that moves with periodic speed ...
Análise numérica do escoamento de fluido em tubos elásticos
(Universidade Estadual Paulista (Unesp), 2010-02-26)
O presente trabalho propõe-se a modelar, analisar, e comparar os efeitos do escoamento de um fluido dentro de um tubo elástico. Esses efeitos, por sua vez, serão ocasionados por uma variação de pressão nesse fluido. Para ...
PULSATILITY INDEX CHANGE OF BRACHIAL ARTERY SHOWS BETTER REPRODUCIBILITY THAN FLOW-MEDIATED VASODILATION
(ELSEVIER SCIENCE INC, 2010)
We aim to evaluate intra- and interobserver reproducibility of brachial artery flow-mediated dilation (FMD) and of pulsatility index change (PI-C) 1 min after a 5-min forearm compression in pregnant women. Flow-mediated ...
Effects of changing blood viscosity and heart rate on vena contracta width as evaluated by color Doppler flow mapping. An in vitro study with a pulsatile flow model
(BLACKWELL PUBLISHING, 2008)
Background: There is only limited knowledge on how the quantification of valvular regurgitation by color Doppler is affected by changing blood viscosity. This study was designed to evaluate the effect of changing blood ...
Análise do perfil hidrodinâmico em diferentes modelos de bombas de rolete utilizadas em circulação extracorpóreaAnalysis of the hydrodynamic profile in different roller pumps models used in cardiopulmonary bypass
(Sociedade Brasileira de Cirurgia Cardiovascular, 2009)